Presumably, in the VIC the choke is designed in such a way so as to completely limit current only to the point that the current doesn't pass the choke. However, since the voltage is leading the current by 90*, the voltage still does leave the choke, even though the current does not. There must be a zone where if the impedance of a choke is too high that the voltage does not pass or too low that current still does. Is this the probable reason for the choke on the negative side (the current source) being variable?
TS
the original design was two separate chokes and they could not be wound identically as relates to resonant frequency being the same for both, thats why there is a variance on one of them, to match the other.
later design has them wound together, bifilar, at the same time...etc. so the resonant frequency matches exactly
the purpose of the choke is to hit it with its inductive capacative resonant frequency in a fashion as to restrict amps and produce maximum voltage potential across the water fuel gap
its all about the resonant frequency of the choke !!!!!! thats what restricts amps on each side